use std::io;
use std::cmp::Ordering;
use rand::Rng;

fn main() {
    println!("Guess the number!");
    let secret_number = rand::thread_rng().gen_range(1..101);
    //println!("The secret number is {}.", secret_number); 

    loop{
        println!("Please input your guess.");
        
        let mut guess = String::new();

        io::stdin().read_line(&mut guess)
            .expect("Failed to read line!");
        
        let guess:u32 = match guess.trim().parse() {
            Ok(num) => num,
            Err(_) => {
                print!("[err]go in error {}", guess);
                continue;},                
        };
        println!("You guessed:{}",guess);
        match guess.cmp(&secret_number){
            Ordering::Less => print!("Too small!\n"),
            Ordering::Greater => print!("Tool big!\n"),
            Ordering::Equal => {
                print!("You win!\n");
                break;}
        }
    }
    
}
